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Slip complexity in a crustal plane model of an earthquake fault

Myers, Christopher H.; Shaw, Bruce E.; Langer, James S.

We study numerically the behavior of a two-dimensional elastic plate (a crustal plane) that terminates along one of its edges at a fault boundary. Slip-weakening friction at the boundary, inertial dynamics in the bulk, and uniform slow loading via elastic coupling to a substrate combine to produce a complex, deterministically chaotic sequence of slipping events. We observe a power-law distribution of small events and an excess of large events. For the small events, the moments scale with rupture length in a manner that is consistent with seismological observations. For the large events, rupture occurs in the form of narrow propagating pulses.


Also Published In

Physical Review Letters

More About This Work

Academic Units
Lamont-Doherty Earth Observatory
Published Here
June 18, 2013
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